World of Computer Networking Your CCNA start - What is Subnetting?

The video tutorial begins with a recap of previous lectures, focusing on network classes A, B, and C, and their default masks. It highlights the scarcity of public IP addresses and introduces subnetting as a solution to optimize IP usage. Subnetting allows the creation of multiple sub-networks from a single network by borrowing bits from the host part of an IP address. This process helps in efficient IP address management and network optimization. The tutorial concludes with a brief mention of upcoming topics.

Which of the following is the default mask for Class A networks?

• Mask 16

• Mask 32

• Mask 8

• Mask 24

What is one of the main benefits of subnetting?

• It makes networks faster.

• It increases the number of available IP addresses.

• It allows the creation of multiple sub-networks from a single network.

• It eliminates the need for IP addresses.

In subnetting, what is borrowed from the host part to create subnets?

• Frames

• Bits

• Packets

• Bytes

What is the default mask for a Class B network?

• Mask 24

• Mask 16

• Mask 32

• Mask 8

How many bits are there in total in every IP address?

• 64 bits

• 32 bits

• 24 bits

• 16 bits